Sunday, January 7, 2018

“Read to Me!” Grandpa Don


Children today are losing their connections to nature and the outdoors. Richard Louv, in his 2005 book, Last Child in the Woods, labeled this the ‘nature deficit disorder.’  What’s wrong with spending less time in the outdoors?  Childhood obesity, ADD, mood disorders, and even myopia, have been associated with excessive indoor child rearing habits. Many parents fear the outdoors and keep children indoors entertained by electronic devices.  Richard Louv, however, recalls that "The woods were my Ritalin. Nature calmed me, focused me, and yet excited my senses."

Page from Last Child in the Woods: Saving Our Children from Nature-Deficit Disorder, by Richard Louv
How will today’s youth ever develop a strong love for nature and the outdoors?  We need to put away our electronic devices and read to children. When you do, be prepared for short attention spans and child-fueled activity levels. That's normal, but so is a child's curiosity. In those rare, special moments we should be ready to read a book at your child’s level.  And it should preferably be about fish and fish life.  What did you expect from a blog labeled “Ichthyology?”  The key is to start early. It’s never too early to read to your child.   

When you read a narrative to a child, remember that your voice matters.  Read the lines in the voice of each character.  Storylines help young children develop their ability to attribute mental and emotional states to others.  Stories have influences on children.  Most adults will share an influence from early reading and how it sparked a life-long curiosity.  Dr. Solomon David, Assistant Professor at Nicholls State University, and authority on primitive fishes, recalled how his first exposure to an Alligator Gar in Ranger Rick magazine sparked a life-long interest in these ancient fishes (see Living Fossil Fishes).   My own eureka moment started me on a long quest to become a fisheries scientist (see On Becoming An Ichthyologist).

Grandpa Don reads The Three Billy Goats Gruff to grand-daughter, Cora. Photo by Valerie Orth.
Most children's books are not about fish. 😠  But there are some wonderful options, old classics and new classics.  Here I will introduce eight of my favorites.  

Grandmother Fish: A Child's First Book of Evolution, by Jonathan Tweet and Karen Lewis, is written for pre-schoolers.  Have you ever wondered how to explain natural selection to a child? Grandmother Fish takes children and adults through the history of life on our planet and explains how we are all connected. It even includes an evolutionary family tree that shows how Grandmother Fish is related to all types of life.  Grandmother Fish also includes guidelines for talking with your children about natural selection.
Children's fishy books on my living room coffee table. 
Fish Do the Strangest Things, by Leonora and Arthur Hornblow, was part of a nature series (Animals do..., Birds do..., and Insects do...) to encourage young children to read.  Published in 1966, it is the earliest published book on my Fishy List.  It includes many interesting facts and illustrations about seventeen unique fishes.  This book explores the way of life of the remora sharksucker, grunion, flying fish, sea horse, mudskipper, and many more wonders of the fish world.  The descriptions are long and accurate, best for more advanced and patient readers. 

Sea Stories: How the Tiny Gobies Saved their Coral Home, by Danielle Dixon and Maural Sowlet, explores the relationship between gobies and coral reefs.  In this story, the critters are personified and have a lesson for the reader.  The story and the critters are based on recent scientific investigations on how corals can send chemical signals to gobies so they will remove competing seaweeds. The story is a fun read for children and has additional information to engage the adult reader.  I anxiously await the release of the next book, Sea Stories: How the Clownfishes Home Gets Into Hot Water. 


The Pout-Pout Fish, by Deborah Diesen and Dan Hanna, is the first in a popular series of Pout-Pout books for preschoolers.  The language is rhyming and the bug-eyed fish spreads "dreary wearies" all over the place.  Undersea creatures of all types (clam, jellyfish, octopus, squid) complain that "Your hulky-bulky sulking is an unattractive trait!"  The excerpt below demonstrates how fun this book is to read aloud.  

     Deep in the water
     Where the fish hang out
     Lives a glum gloomy swimmer
     With an ever-present pout.

Several pout pout fish books are available that deal with issues of bullies, school, being alone in the dark, and holiday activities. While I cannot be certain what fish species the pout-pout fish was patterned after, I do know the permanent frown is common look for most fish predators.
This sculpin has a pout-pout look and never smiles.  Photo by Isaac Szabo with permission.
Two books, Shark Lady (by Jess Keating) and Swimming with Sharks (by Heather Lang), explore the ground-breaking work of marine biologist, Dr. Eugenie Clark (1922-2015).  Clark was an inspiration to many young female scientists for her tenacious persistence in the face of male dominance in her field. At one point her mother suggested "maybe you should take up typing and you could be a secretary to William Beebe." William Beebe was her hero at the time.  However, she ignored such biased opinions and went on to do groundbreaking studies while raising four children!  She made numerous scientific advances and published over 175 scientific articles during her career. She wrote two books Lady with a Spear (1953) and The Lady and the Sharks (1969) that chronicled her early experiences.  The two new children's books are a fitting tribute to her life and work devoted to diving and science.  If interested, read her obituary. 
 
From Shark Lady, one of Eugenie Clark's professors believed that women should not become scientists or ocean explorers.
Eugenie Clark was not deterred by the prevailing opinions of the time.  Shark Lady
The Rainbow Fish is an award-winning book about a beautiful fish who finds friendship and happiness when he learns to share. The book tells the story of the Rainbow fish with its distinctive shiny scales. The moral of the story is about the value of being an individual. Click here to listen to The Rainbow Fish read by Ernest Borgnine. 

Russell the Mussel is a local favorite, written by Adele Conover, Richard Biggins, and Richard Neves. It chronicles the story of Jill, who befriends Russell the Mussel, and the scientist Dr. Richards.   Dr. Richards is a scientist who works to restore habitat and propagate Rabbitsfoot mussels to add to Crystal Creek.  Along the way the reader learns more about fishes, snails, mussels, frogs, hellbenders, insects, and crayfish that live in Crystal Creek. 

Russel the Mussel is available for download online. 
I highly recommend these books and hope you will read them.

These other popular books about fish should be added to your children’s fishy library: 

    One Fish Two Fish Red Fish Blue Fish by Dr. Seuss
    Curious George at the Aquarium by H. A. Rey, Margaret Rey, and R. P. Anderson
    Swimmy by Leo Lionni
    Splish, Splash! by Sarah Weeks and Ashley Wolff
    McElligot’s Pool by Dr. Seuss
    Fish Is Fish by Leo Lionni
    Mister Seahorse by Eric Carle
    Big Al by Andrew Clements and Yoshi
    A Fish Out of Water by Helen Palmer and P. D. Eastman
    Sea Creatures Pop-up: Squirmy, Scary Fish Face- to-Face 
          by Sally Hewitt and Chris Gilvan-Cartwright
    Down, Down, Down: A Journey to the Bottom of the Sea by Steve Jenkins

Please comment and share your favorites!

Grandson, Nolan, outdoors looking at the fish.  Photo by Maggie Turner. 
Read aloud and kids will ask for more.  Take a kid fishing, but be ready to read to a child.


Tuesday, January 2, 2018

Favorite Posts of 2017

Virginia Tech Ichthyology is devoted to teaching and learning about fishes.  We posted thirty nine blog posts in 2017.   Here I review the favorite blog posts from 2017.

Sea Lamprey and the Unexpected Costs of Shipping

Sea Lamprey accessed the upper Great Lakes when shipping access was improved.  They arrived at a time when Walleye, Lake Trout, Burbot, and Whitefishes were commercially over harvested.  The added mortality from Sea Lamprey was the tipping point that led to collapse of these valuable fisheries.  Expensive control efforts continue to the present time to deal with this invader.
Oral disc of the parasitic Sea Lamprey. Photo by Cory Genovese
Shades of Gray Snapper

Gray Snapper are common on Caribbean reefs that attract large spawning aggregations.  They go by a variety of names because they do not always appear to be "gray."  Gray Snapper are often overfished.  This story of the habitat and life history of Gray Snapper emphasizes the importance of conserving both inshore seagrass and mangrove habitats as well as offshore coral reefs.

Gray Snapper. Photo by Ned DeLoach  Source 
Puzzling over Large Aggregations of Sharks

This story explores how super abundant shark aggregations in a biosphere reserve persist because they rely on spawning aggregations of groupers for energy subsidies.  This discovery illustrates the futility of single species fisheries management.  Even if no sharks were harvested from this population, the population may decline depending on conditions for other fishes outside the biosphere reserve. Conservation of fish spawning aggregations, which are often targets of exploitation can help conserve shark populations, especially if combined with shark fishing bans.


Examples of shark foraging at night on the Camouflage Grouper Epinephelus polyphekadion (A, B, and C) and the Whitemargin Unicorn fish Naso annulatus (D).  Source

Pike Killifish: A Small, Specialized Ambush Predator

The Pike Killifish is an enigma. It is the only member of the Poeciliidae family that is a specialized piscivore.  Pike Killifish live in slow-moving streams and rivers, mangrove and weedy swamps, and inlets salty bays, where they associate with abundant submersed vegetation.  Their native distribution ranges from Costa Rico north into parts of Mexico.  From a single introduction in Miami-Dade County in 1957, the Pike Killifish became established in south Florida where their wide tolerance for temperature, salinity, and oxygen level allowed them to thrive in many habitats. 
Large adult Pike Killifish. Photo by Kenneth Tse Photography
Painful Stings of the Notorious Noturus

Madtoms are diminuitive catfishes that are bound to intrigue those who encounter them.  However, their pectoral and dorsal fin spines are sharp and deliver a painful venom.  Madtoms have a paradoxical combination of the strong anti predator adaptation while being a very popular bait fish.
How cute is this Margined Madtom Noturus insignis? Be careful, it packs a painful sting.  Photo by D.J. Orth.
Mad about Madtoms

These benthic nocturnal catfish arose in eastern North America sometime in the middle Miocene (that's 23.03 to 5.33 million years before the present).  Many of the twenty nine species have small, fragmented populations and are at-risk from a variety of human activities.  Although they are seldom the subject of thorough population studies, restoration activities are more commonplace today.   Madtom species are cryptic in more ways than one.   Click here to review some madtom photos.
Mountain Madtom Noturus eleutherus have a highly fragmented distribution.   photo by Tim Lane
Sharks without Fathers, by Rasha Aridi

In this essay, Rasha Aridi explains how shark offspring can be produced without a male contribution.   In 2002 a bonnethead shark gave birth in a zoo even though it had never been kept with a male.  This "virgin shark" mystery persisted and keen observers began to investigate cases of virgin birth in captivity.  Using DNA fingerprinting, these cases confirmed that all elements of the DNA in the offspring were from the mother.   Some species of sharks can produce offspring via sexual reproduction and parthenogenesis.

Parthenogenic zebra shark pup hatched and reared by the Burj Al Arab Aquarium Team. Source. 
Pelagic Thresher Sharks are Philippine Helpful, by Maddie Johnson

A major typhoon devasted an island resort leaving little or no infrastructure.  This essay examines the response of the locals in building a tourism-based economy based on the Thresher Shark.  Fisherman who used to make their money from catching as many thresher sharks as they could now make their money from this unique eco-tourism trade.
Thresher Shark.   Photo by Hugh Ross.  Source 

Siberian Taimen: Ensuring the Survival of the River Wolf, by Spencer Bell

Hucho taimen is known to the Chinese as the "river god's daughter." Mongolians protected their rivers for many centuries in keeping with their beliefs.  Consequently, some populations of the largest salmonid in the world still remain.  Today, recreational catch-and-release fishing has replaced poaching on the remaining Taimen populations.

Three Taimen, underwater photo from Eg River, northern Mongolia.  Source. 

Bow fishing for "Rough" Fish

Rough fish is an old term that once referred to less valued fish that had yet to be processed.  Today, more anglers are targeting rough fish for sport and bow fishing is among the fastest growing new fishing pursuits.  However, fishing regulations must change with the time and the term "rough" fish need to be replaced with more appropriate language.

Bow fishing at dusk.  Photo by Jason Emmel

Climate Change and the Fishes

Fear and doom stories about climate change have led to more research and development of strategies for adapting to eventual changes.  However, the scientific investigations have revealed a complex interactions of stressors related to climate change. Although there is still much to learn, it is apparent that we need to act now to protect cole and cool water refugia.
Documented responses of fishes in the southeastern USA to climate change. Green arrows indicate an increase or earlier seasonal response, and gray arrows indicate a decrease or later seasonal response  (Lynch et al. 2016).
Endemic Fishes of the New River

In my home watershed there are 8 species of endemic fishes.  They are all cool water specialists that found refuge in the upper New River during the last ice age.  These endemic fishes have limited distributions and will be disproportionately influenced by anthropogenic changes that may occur.  Read more about these 8 species in this post to learn why the New River is a special place for fishes.
New River near Rich Creek, Virginia.  Photo by Valerie F. Orth. 
Trends in Dam Removal: Reversing Irreversible Decisions

How many dams are there in the USA?  How many dams have been removed from streams? What happens to the stream after dam removal? What are the gaps in the science of dam removal?   Learn the answers to these and other questions.

Pigg River Power Dam before (photo by USFWS) and during demolition (photo by Roanoke Times)